Trolley.



No. 772,321. 'PATENTED OCT. 11, 1904;

- P. ANDERSON.

TROLLEY.

APPLICATION FILED mm: 20,1904.

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UNITED STATES Patented October 11, 1904.

PATENT OFFICE.

PERRY ANDERSON, OF SHARPSBURG, PENNSYLVANIA.

TROLLEY.

SPECIFICATION forming part of Letters Patent No. 772,321, dated October 11,1904.

Application filed June 20, 1904. Serial No. 213,213. (No model.)

To all whom it may concern:

Be it known that I, PERRY ANDERSON, a citizen of the United States, residing at Sharpsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Trolleys, of which the following is a specification, reference beinghad therein to the accompanying drawings, forming part of this specification, in which Figure l is a view in side elevation of my improved trolley. Fig. 2isaplan view. Fig. 3 is a vertical section on the line III III of Fig. 2. Fig. 4 is a sectional detail view showing removal of the wire.

My invention relates to an improvement in trolleys for electric cranes or other slow-speed current-supplied devices; and it consists of the features of improvement hereinafterdescribed whereby the device is readily applied to and disengaged from the trolley-wire and maintained in operative position.

Referring to the drawings, 2 is the trolleypole, to which the sides 3 4 of the trolley are clamped by bolts 5, as clearly shown,the trolley-pole being preferably secured in an upright position.

The side 3 is provided witha lateral stud 6, providing at 7 a bearing for the grooved trolley-wheel 8, which fits on said bearing somewhat loosely, thus allowing for considerable deflection of the wheel. The body portion of side 3 is reinforced, as shown, and provides a backing and side bearing for the wheel. yond wheel 8 is mounted a disk 9 upon stud 6,with a guiding key or spline 10, adapted to keep the disk in alinement and prevent rotation. Disk 9 is provided with a lateral ear or lug 11, recessed on its under side to engage the trolley-Wire and projectingcentrally over the top of wheel 8, as clearly shown. Beyond disk 9 is acoiled spring 12, held in place by a nut 13, by which construction the disk is normally held up against the trolley-wheel and itslug 11 maintained in position over the wire.

.The disk effectually covers the wheel on one side, while the circular base of side 3 does the same on the other side, thus completely inclosing and protecting the wheel from contact or injury.

When it is desired to insert or remove the wire, disk 9 is drawn back and deflected upwardly, as in Fig. 4, thereby widening the opening between the edge of wheel 8 and the edge of lug 11 sufiicient to allow the wire to pass. Upon releasing the disk it will normally assume the position of Figs. 1 and 3,

and in such position the trolley is elfectually prevented from leaving the wire.

The device is very simple in construction, efl'ective in operation, not liable to get out of order, and economical in cost. It may be applied to various uses or combinations and may be changed by the skilled mechanic without departing from the following claims.

What I claim is V 1. In a trolley, the combination of a base provided with a bearing-stud, a grooved wheel, a disk provided with a projecting lug, and resilient means for normally maintaining the disk and lug in position, substantially as set forth.

2. In a trolley, the combination of a base provided with a bearing-stud, a grooved wheel, a disk provided with a projecting lug, a coiled spring, and a nut mounted on the stud,'substantially as set forth.

3. A trolley provided with a wheel-bearing, a contact-wheel mounted thereon, an adjustable protecting portion in spline engagement with the wheel-bearing, and a compressing-spring adapted to hold said portion in normal position, substantially as set forth.

4:- In a trolley, the combination with a companion side piece and securing means therefor, of a base portion provided with a wheelbearing stud, a grooved wheel rotatably mounted thereon, a disk in spline engagement with the stud provided with a wire guard, a coiled compression-spring, and a retaining device for the spring, substantially as set forth.

In testimony whereof I afliX my signature in presence of two witnesses.

PERRY ANDERSON. 

